A NEW PANTOPHTHALMUS 27 



about a puncture width apart, the punctures laterally on the vertex closer 

 and slightly coarser, post-vertex medially impunctate, laterally closely 

 punctured ; antennae 1 4-jointed, middle lobe of mesoscutum rugose, the 

 lateral lobes shiny, indistinctly punctured ; scutellum coarsely rugose- 

 punctate, mesopleurae mostly smooth, along the lower and front margins 

 coarsely punctured, posterior margin with a single row of deep pits ; 

 propodeum with a narrow posterior face surrounded by a carina which 

 is produced to a small spicule medially above ; wings hysJine, radius 

 obsolete for slightly more than apical half of second abcissa ; legs reddish 

 brown, coxae dark brown ; abdomen coarsely rugoso-punctate, apex of ab- 

 domen with two small tubercles ; ovipositor slightly longer than abdomen. 



Male : Length about 2.25 nun. Similar to the female except in sec- 

 ondary sexual characters. 



Described from two females and one male collected in Illinois by 

 Prof. S. A. Forbes, the type with his No. 1 7243, the allotype 5048, 

 the paratype female I 7235. 



Type specimen, Cat. No. 18235, U. S. Nat. Mus. 



The manuscript neime used by Dr. Ashmead is adopted. 



A NEW PANTOPHTHALMUS 



{Diptera, Paniophthalmida) 

 By FREDERICK KNAB 



The family Pantophthalmidae is better known under the name Acan- 

 thomeridae, the change having been made recently in accordance with 

 the rules of priority. The generic name Pantophthalmus, which ante- 

 dates Acanthomera, is here used in the restricted sense, ais recently 

 defined by Enderlein,^ the species included having the hind femora un- 

 armed and the face of the female with only a rounded tubercle. To 

 Acanthomera are referred those species in which the hind femora bears 

 a thorn before the outer third and the face of the femeJe a stout thorn- 

 like process. I have been unable to reconcile any of the published 

 descriptions wath the following species. 



Pantophthalmus fastuosus, new species. 



Mesonotum dark, with a broad median yellov^ish gray stripe. Abdo- 

 men fenuginous-red in the male, darker in the female. Hind femora 



' Dipterologische Studien, I , Die Dipteren-Familie Pantophthalmidae. Zool. Anz., 

 vol.41, pp. 97-118(1912). 



